> For the complete documentation index, see [llms.txt](https://docs.pentaho.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.pentaho.com/pdia-data-integration/9.3-data-integration/pdi-transformation-steps-reference-overview/add-sequence-step-article/pdi-transformation-counter-generated-sequence-add-sequence-step.md).
# PDI transformation counter generated sequence
The following table contains options for generating a sequence from a PDI transformation counter:
| Option | Description |
| -------------------------------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| **Use counter to calculate sequence?** | Select this check box if you want the sequence to be generated by PDI. This option is set by default
Use DB to generate the sequence? is automatically selected if this check box is cleared.
|
| **Counter name (optional)** | Specify the name of the counter if multiple steps in a transformation generate the same value name to avoid unique sequencing across multiple steps. |
| **Start at value** | Specify the value to start the sequence. For example, if **Start at value** is set to `1`, then the sequence will start with `1`. If **Start at value** is set to `0`, then the sequence will start with `0`. |
| **Increment by** | Specify the amount by which the sequence increases or decreases. |
| **Maximum value** | Specify the value to reach before returning the sequence to the **Start at value** setting. |
For example, if you set \*\*Start at value\*\* to \`1\`, \*\*Increment by\*\* to \`1\`, and \*\*Maximum value\*\* to \`3\`, then the resulting sequence will be \`1, 2, 3, 1, 2, 3, 1, 2\`... If you set \*\*Start at value\*\* to \`0\`, \*\*Increment by\*\* to \`-1\`, and \*\*Maximum value\*\* to \`-2\`, then the resulting sequence will be \`0, -1, -2, 0, -1, -2, 0\`...
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